Duffel bag



FIG. 1 is a front, right perspective view of a duffel bag showing ournew design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines immediately adjacent to the shaded area representunclaimed boundaries of the design.

CLAIM The ornamental design for a duffel bag, as shown and described.